Preheat oven to 400. In a 9 x 13 baking dish place chunked potatoes and polish sausage. In a separate bowl melt margarine, when melted add the parm cheese and garlic mix well. Drizzle over the potatoes and sausage. Toss until well coated. Cover with foil and bake at 400 degrees till potatoes are done. Approximately 30 minutes.